45 results found (3343ms)
Airworthiness Directives; Thommen Aircraft Equipment AG Digital Air Data Computers
Unsafe Condition: Occurrences of AC32 Digital ADCs that stopped functioning due to the power module failing at temperatures below -20 degrees Celsius.
Why matched: Airworthiness Directives; Thommen Aircraft Equipment AG Digital Air Data Computers
Airworthiness Directives; Columbia Helicopters, Inc., and Restricted Category Model CH-47D Helicopters
Unsafe Condition: Failure of flight control rigid connecting links (part number 145C3340-10) due to a manufacturing defect, specifically an eccentricity of the threaded bore in the end of the tube associated with th...
Why matched: Airworthiness Directives; Columbia Helicopters, Inc., and Restricted Category Model CH-47D Helicopters
Airworthiness Directives; Various Helicopters
Unsafe Condition: unsafe condition on these products.
Why matched: Airworthiness Directives; Various Helicopters
Airworthiness Directives; Various Model 234 and Model CH-47D Helicopters
Unsafe Condition: Inadequate maintenance overhaul procedures and scheduled overhaul intervals for the longitudinal cyclic trim actuator (LCTA) likely contributed to the unsafe condition. The failure modes were diffe...
Why matched: Airworthiness Directives; Various Model 234 and Model CH-47D Helicopters
Airworthiness Directives; Various Model 234 and Model CH-47D Helicopters
Unsafe Condition: cracking in the pitch housing lugs, located on the lead side of the lower vertical pin lug, due to fatigue and underestimated load conditions in the original life limit calculations.
Why matched: Airworthiness Directives; Various Model 234 and Model CH-47D Helicopters
Airworthiness Directives; Columbia Helicopters, Inc. (Type Certificate Previously Held by Boeing Defense & Space Group) Helicopters
Unsafe Condition: Fatigue failure of the structure surrounding the aft pylon following an aft rotor blade failure, leading to blade separation, vibration, and overload of the aft pylon structure, resulting in pylon ...
Why matched: Airworthiness Directives; Columbia Helicopters, Inc. (Type Certificate Previously Held by Boeing Defense & Space Group) Helicopters
Airworthiness Directives; Boeing Vertol (Type Certificate Currently Held by Columbia Helicopters, Inc. (CHI)) and Kawasaki Heavy Industries, Limited Helicopters (Kawasaki)
Unsafe Condition: Failure of an upper collective pitch control yoke bolt (bolt).
Why matched: Airworthiness Directives; Boeing Vertol (Type Certificate Currently Held by Columbia Helicopters, Inc. (CHI)) and Kawasaki Heavy Industries, Limited Helicopters (Kawasaki)
Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing (Previously the Lancair Company)) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Unsafe Condition: Damage in the rudder hinges and the rudder hinge brackets, which could result in failure of the rudder. This failure could lead to loss of control.
Why matched: Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing (Previously the Lancair Company)) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Airworthiness Directives; Cessna Aircraft Company (Cessna) (Type Certificate A00003SE Previously Held by Columbia Aircraft Manufacturing (Previously The Lancair Company)) Models LC41-550FG and LC42-550FG Airplanes
Unsafe Condition: Disbonding of the wing skin from the upper forward wing spar, as occurred in a Cessna Model LC41-550FG airplane during a production acceptance flight test, leading to a significant structural failure.
Why matched: Airworthiness Directives; Cessna Aircraft Company (Cessna) (Type Certificate A00003SE Previously Held by Columbia Aircraft Manufacturing (Previously The Lancair Company)) Models LC41-550FG and LC42-550FG Airplanes
Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing (Previously The Lancair Company)) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Unsafe Condition: Corrosion of the anodized 2024 aluminum rudder hinge brackets, leading to cracking, deformation, and discoloration, which could result in failure of the rudder and loss of control.
Why matched: Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing (Previously The Lancair Company)) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Unsafe Condition: The aileron and elevator control systems may have incorrect torque values for the bolts attaching the pushrods to the bellcranks, which could result in the bolts loosening and causing control surfa...
Why matched: Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Unsafe Condition: Reports of possible foreign object contamination of the linear bearings, which could result in jamming in the aileron and elevator control systems, leading to failure and loss of control.
Why matched: Airworthiness Directives; Cessna Aircraft Company (Type Certificate Previously Held by Columbia Aircraft Manufacturing) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Airworthiness Directives; Columbia Aircraft Manufacturing (Previously the Lancair Company) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Unsafe Condition: Possible foreign object contamination of the aileron and elevator linear bearings could result in jamming of the control systems, leading to failure and loss of control.
Why matched: Airworthiness Directives; Columbia Aircraft Manufacturing (Previously the Lancair Company) Models LC40-550FG, LC41-550FG, and LC42-550FG Airplanes
Airworthiness Directives; Columbia Aircraft Manufacturing Models LC41-550FG and LC42-550FG Airplanes
Unsafe Condition: Problems with the installation of the Kelly Aerospace Thermal Systems Thermawing Deice System following STC SA02260CH, resulting in a short circuit condition at the deice heater connector, which co...
Why matched: Airworthiness Directives; Columbia Aircraft Manufacturing Models LC41-550FG and LC42-550FG Airplanes
Airworthiness Directives; Boeing Vertol Model 107-II Helicopters
Unsafe Condition: Cracking on the ends of the spline teeth of the quill shaft, around the pinhole, occurs due to a wear step in the mating pinion gear splines. These cracked spline teeth can provide stress concentra...
Why matched: Airworthiness Directives; Boeing Vertol Model 107-II Helicopters
Airworthiness Directives; Boeing Defense and Space Group Model 234 Helicopters
Unsafe Condition: Crack in the upper shaft extension of the aft vertical shaft assembly, which could result in catastrophic failure of the assembly and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; Boeing Defense and Space Group Model 234 Helicopters
Airworthiness Directives; Hamilton Sundstrand Power Systems (Formerly Sundstrand Power Systems, Turbomach, and Solar) T-62T Series Auxiliary Power Units
Unsafe Condition: Stress levels in compressor wheels part number 100636-1 are high enough to initiate and drive crack growth, potentially leading to uncontained compressor wheel failure and damage to the airplane.
Why matched: Airworthiness Directives; Hamilton Sundstrand Power Systems (Formerly Sundstrand Power Systems, Turbomach, and Solar) T-62T Series Auxiliary Power Units
Airworthiness Directives; Boeing Defense and Space Group Helicopter Division Model 234 Series Helicopters
Unsafe Condition: Loose nuts on the spiral bevel ring gear bolted connection can lead to wear of the spiral bevel ring gear flange surface, failure of the bolted connection, transmission failure, and subsequent loss...
Why matched: Airworthiness Directives; Boeing Defense and Space Group Helicopter Division Model 234 Series Helicopters
Airworthiness Directives; BOEING HELICOPTERS (BOEING VERTOL HELICOPTER CO. Model 234 Series Helicopter
Unsafe Condition: Failure of a rotor blade damper elastomeric rod end, part number 234RS202-1 and -2, could result in the rotor blade striking the helicopter during start up or shut down.
Why matched: Airworthiness Directives; BOEING HELICOPTERS (BOEING VERTOL HELICOPTER CO. Model 234 Series Helicopter
Airworthiness Directives; BOEING HELICOPTER COMPANY (BOEING VERTOL; VERTOL) AND KAWASAKI HEAVY INDUSTRIES, LTD Model 107-II and Kawasaki KV107-II and KV107-IIA Helicopters
Unsafe Condition: Failure of a main rotor hub, P/N 107R2550, which could result in loss of control of the helicopter.
Why matched: Airworthiness Directives; BOEING HELICOPTER COMPANY (BOEING VERTOL; VERTOL) AND KAWASAKI HEAVY INDUSTRIES, LTD Model 107-II and Kawasaki KV107-II and KV107-IIA Helicopters
BOEING HELICOPTER COMPANY (BOEING VERTOL; VERTOL) AND KAWASAKI HEAVY INDUSTRIES, LTD: y Model 107-II and Kawasaki Model KV107- IIA Helicopters
Unsafe Condition: A cracked aft main rotor shaft slider guide, Part Number 107R3574-1, could cause possible hazards in flight.
Why matched: BOEING HELICOPTER COMPANY (BOEING VERTOL; VERTOL) AND KAWASAKI HEAVY INDUSTRIES, LTD: y Model 107-II and Kawasaki Model KV107- IIA Helicopters
Airworthiness Directives; BOEING HELICOPTER COMPANY (BOEING VERTOL) Model 234 Series Helicopters
Unsafe Condition: Cracked aft landing gear spindle P/N 114L2322-5, -8, -9, or -11 could cause possible hazards in landing.
Why matched: Airworthiness Directives; BOEING HELICOPTER COMPANY (BOEING VERTOL) Model 234 Series Helicopters
Airworthiness Directives; BOEING VERTOL Model 234 Series Helicopters
Unsafe Condition: Failure of the spiral bevel ring gear/sun gear bolted joint.
Why matched: Airworthiness Directives; BOEING VERTOL Model 234 Series Helicopters
Airworthiness Directives; BOEING VERTOL COMPANY (VERTOL) AND KAWASAKI HEAVY INDUSTRIES, LTD. Model 107-II Helicopters and Kawasaki KV107-II and IIA Helicopters
Unsafe Condition: Fatigue failure of life limited components such as the Alum Synch Shaft Assembly, Steel Synch Shaft Assembly, Synchronizing Shaft Splined Adapter, Quill Shaft, Fwd and Aft Rotor Hubs, and Fwd and A...
Why matched: Airworthiness Directives; BOEING VERTOL COMPANY (VERTOL) AND KAWASAKI HEAVY INDUSTRIES, LTD. Model 107-II Helicopters and Kawasaki KV107-II and IIA Helicopters
Airworthiness Directives; BOEING VERTOL COMPANY Model 234 Series Helicopters
Unsafe Condition: Cracking of the forward main rotor drive shaft could cause possible hazards in flight.
Why matched: Airworthiness Directives; BOEING VERTOL COMPANY Model 234 Series Helicopters